A novel synthesis of 2-arylhydrazono-6-amino-4-arylbenzene-1,3-dicarbonitriles and their conversion into phthalazines
摘要:
Compounds 1a-d react with benzylidenemalononitrile 2 to yield dihydroaminopyridazines 3a-d and, in contrast, compounds 1e,f react with 2 under the same conditions to yield aminobenzenedicarbonitriles 8e,f compound 8e underwent intramolecular cyclization to phthalazine 9e. Compound 10e reacted with 2a to yield 11e. (C) 2009 Elsevier Ltd. All rights reserved.